He is not very good…. doing sums. A) on B) in C) with D) at E) upon
Устойчивое выражение to be good at - быть преуспевать
He is not good at doing sums.
He is not very good…. doing sums. A) on B) in C) with D) at E) upon
Устойчивое выражение to be good at - быть преуспевать
He is not good at doing sums.